Why would setting [removed] not work in Chrome?

Question

My coworker ran into an issue where NO cookie could be set on Chrome via code like this:

document.cookie = \"TEST=1; expires=Tue, 14 Oct 2014 20:23:32 GMT; pat

Answer 1

The way cookies work, at least in Chrome, is a bit weird.

If you need to change a cookie's value, then you need to add/set each keys one by one.

Try this in your console:

document.cookie; // -> "expires=Tue, 14 Oct 2014 20:23:32 GMT; path=/"
document.cookie = 'TEST=1';
document.cookie; // -> "TEST=1; expires=Tue, 14 Oct 2014 20:23:32 GMT; path=/"

Yes, it has added the key, and not replace the whole cookie with TEST=1.

If you need to remove a key, you can simple provide no value: TEST=.

I hope this will get you out of the cookie nightmare (it was for me).